JP2002106973A - Solar heat utilizing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To raise heat collecting capacity as an entire roof in a solar heat utilizing system. SOLUTION: In the solar heat utilizing system 100, when a heat collecting section 101 is installed on an inclined face of the roof, heat collecting capacity is made higher towards an upper side from a lower side in an inclination direction of the roof. A heating medium pipe 31 is disposed in such a manner as to make a refrigerant to flow from the heat collecting section (power generating/heat collecting part 40) on the lower side in the inclination of the roof to the heat collecting section on the higher side (exclusive heat collecting section 30).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar heat utilization system utilizing solar energy for hot water supply, heating and hot water supply, power generation and hot water supply, or power generation and hot water supply and heating.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Patent Application No. 11-203110, when a photothermal hybrid module in which a solar cell panel and a heat collecting panel are laminated is provided, a heat collecting dedicated section consisting of only a heat collecting panel is provided. There is a technology in which solar energy can be used effectively from both light energy and heat energy.

[0003]

In the prior art, although the solar heat collector and the photothermal hybrid module have been improved in heat collecting performance on an individual basis, the solar heat collector and the photothermal hybrid module are installed. No consideration was given to improving the heat collection performance of the entire roof, and there was difficulty in improving the heat collection performance of the entire roof.

[0004] An object of the present invention is to improve the heat collection performance of the entire roof in a solar heat utilization system.

[0005]

In the solar heat utilization system according to the first aspect of the present invention, when a heat collecting section for heating a heat medium by solar heat is provided on an inclined surface of the roof, the heat collecting performance of the heat collecting section is adjusted. The heat medium pipe is arranged so that the heat medium flows from the lower heat collector to the upper heat collector in the inclination direction of the roof. It was done.

According to a second aspect of the present invention, in the first aspect of the present invention, a photothermal hybrid module in which a solar cell panel and a heat collecting panel are stacked and a solar heat collector are used as the heat collecting portion, and The photothermal hybrid module is installed on the lower side in the inclination direction, and the solar heat collector is installed on the upper side.

According to a third aspect of the present invention, in the first aspect of the present invention, a solar cell having a solar cell and a hot melt resin for sealing and bonding the solar cell is provided on the back surface of the panel as the heat collecting portion. Using a photothermal hybrid module with stacked heat collection panels, a power generation and heat collection unit with stacked solar cell panels and heat collection panels on the lower side of the roof inclining direction,
A dedicated heat collecting section consisting of only a heat collecting panel is provided on the upper side.

[0008]

According to the first aspect of the present invention, the following operations are provided. Heat medium pipes that allow the heat medium to pass through the heat collecting section allow the heat medium to flow from the lower heat collecting section to the upper heat collecting section of the roof, and the heat collecting performance of the heat collecting section also increases from the lower level of the roof to the higher level. It is improving towards. Therefore, the heat medium that gradually rises in temperature through the heat medium pipe in order from the lower side can be further efficiently heated to a higher temperature in the heat collection section having higher heat collection performance (heat collection efficiency) on the upper and final stage side, and the entire roof can be heated. Can improve the heat collection performance.

According to the second aspect of the invention, the following operations are provided. The light-heat hybrid module, which sacrifices the heat collection performance by trying to convert a part of the solar energy into electric energy, is mounted on the lower side of the roof, and the heat collection performance is improved by trying to convert the solar energy into heat energy only. Since the high solar heat collector is installed on the upper side, the above is realized, and the heat collecting performance of the entire roof can be improved.

When a heat collector is provided in a certain area of the roof, a solar heat collector having high heat collecting performance is installed in a part of the heat collector,
Since a large area dedicated to heat collection is secured, the amount of heat collection can be increased and the heat collection performance can be improved.

According to the third aspect of the invention, the following operations are provided. In one photothermal hybrid module, the power generation / collection unit, which sacrifices the heat collection performance by converting part of the solar energy into electric energy, is placed on the lower side of the roof, and the solar energy is transferred to the heat energy. Since the dedicated heat collecting portion having high heat collecting performance is installed on the upper side by converting to only the above, the above is realized, and the heat collecting performance of the entire roof can be improved.

When a heat collecting section is provided in a certain area of a roof, a heat collecting section having high heat collecting performance is installed in one photothermal hybrid module constituting a part of the heat collecting section, and a large heat collecting area is provided. Therefore, the amount of heat collection can be increased and the heat collection performance can be improved.

Since the heat collecting performance of the entire roof can be improved by the above-mentioned items, the number of solar heat collectors and photothermal hybrid modules used can be reduced, and the number of construction steps and construction costs can be reduced.

[0014]

FIG. 1 is a front view showing a solar heat utilization system according to a first embodiment, FIG. 2 is a front view showing a photothermal hybrid module, FIG. 3 is a photothermal hybrid module, and FIG. Figure, (B) is BB of (A)
FIG. 4 is an exploded perspective view showing a photothermal hybrid module, and FIG. 5 is a front view showing a solar heat utilization system of a second embodiment.

(First Embodiment) (FIGS. 1 to 4) A solar heat utilization system 100 has a heat collecting portion 101 formed on an inclined surface of a triangular roof Y of a building T. Heat collecting unit 10
Reference numeral 1 denotes a plurality of photothermal hybrid modules 1A arranged in a horizontal row at a certain step (the lowest step in FIG. 1) of the roof Y in the inclination direction.
And a plurality of solar cell modules 1B arranged in one horizontal row at another stage (in FIG. 1, from the second stage to the uppermost stage) in the inclination direction.

Hereinafter, the configuration of each of the photothermal hybrid modules 1A and the overall configuration of the solar heat utilization system 100 will be described.

(Configuration of Photothermal Hybrid Module 1A) (FIGS. 2 and 3) As shown in FIGS. 3 and 4, the photothermal hybrid module 1A includes a transparent plate 2 made of white glass and a heat medium pipe 31. The solar cell module 4 is provided between the heating plate 3 and the solar cell module 4.

The transparent plate 2 may be a transparent synthetic resin having good light resistance other than glass, and a cover glass plate 8 is provided on the transparent plate 2 via a spacer 7.
A space 9 is formed between the transparent plate 2 and the cover glass plate 8. This space 9 may be either an air layer or an inert gas layer.

The spacer 7 has a frame shape and the transparent plate 2
Is provided on the periphery. Then, the periphery of the photothermal hybrid module 1A is hermetically sealed by a urethane resin frame 10 formed by RIM (reaction injection molding) so as to be watertight,
A heat insulating plate 11 is provided on the back side of the heat collecting panel 3.

The heat medium pipe 31 is heat conductively attached to the heat collecting panel 3 which is formed of a metal having high thermal conductivity such as aluminum and copper and has a rectangular shape in a plan view. That is, a semicircular concave groove is formed in the heat collecting panel 3, and the heat medium pipe 3 is formed in the concave groove.
1 are provided in close contact with each other.

The heat medium pipe 31 is a pipe through which a heat medium such as water, antifreeze or the like is passed. Both ends of the heat medium pipe 31 protrude from the heat collecting panel 3 and are connected to header pipes 32 provided on both sides. Are linked. Note that the heat medium pipe 31 may be a synthetic resin pipe.

The solar cell panel 4 includes solar cells 5, 5,... Made of single-crystal silicon, polycrystalline silicon, amorphous silicon, a compound semiconductor, etc., and EVA (ethylene-vinyl acetate) for sealing the solar cells 5. Hot melt resin 6 (upper EVA6A, lower EVA6) such as a copolymer) or PVB (polyvinyl butyral).
B), and is laminated and polymerized with the heat collecting panel 3 via the hot melt resin 6. Are connected by lead wires (not shown).

In the photothermal hybrid module 1A of the present embodiment, as shown in FIGS. 2 and 3A, the solar cells 5, 5,... And the other part of the heat collecting panel 3 is a dedicated heat collecting part 3 in which the solar cells 5 are not arranged.
It is set to 0.

That is, the solar cells 5, 5,... Are arranged so as to be shifted to one of two opposing sides of the heat collecting panel 3.

Although the heat collecting section 30 has a size corresponding to approximately one row of the solar cells 5, it may have a plurality of rows. In order to remarkably improve the heat collecting performance, it is preferable that the heat collecting portion 30 is provided for at least one row of the solar cells 5.

In the photothermal hybrid module 1A of the present embodiment, a part of the heat collecting panel 3 is provided with a solar cell panel 4 to form a power generation / heat collecting part 40, and the other part of the heat collecting panel 3 is a solar cell. Since the heat collecting section 30 is not provided with the battery panel 4, the heat collecting section 30 can improve the heat collecting performance.

(Method of Manufacturing Photothermal Hybrid Module 1A) (FIG. 4) As shown in FIG. 4, the transparent plate 2 and the solar cells 5, 5,
, A solar cell 5 placed on the sealing hot melt resin 6 and a sealing hot melt resin 6 on the other side. The sheet of the melt resin 6 and the heat collecting plate 3 are laminated in this order to form a laminate S.

At this time, it is preferable to laminate on a lower mold plate (not shown) provided with a heater or the like of a press machine.

In the above-described laminating step, in the photothermal hybrid module 1A of the present embodiment, the solar cell module 4 is disposed on a part of the heat collecting plate 3 to form the power generation / heat collecting section 40, and the heat collecting plate The solar cells 5, 5,..., Which are wired and connected on one side of the hot-melt resin 6 for encapsulation so as to form a dedicated heat collecting section 30 in which the solar cell module 4 is not disposed in the other part of the cell 3. Is placed.

Then, after the laminating step, the laminated body S is sandwiched between the upper die plate and the lower die plate of the press machine, and pressurized and heated at a predetermined pressure and temperature to form the hot melt resin 6 for sealing. Is melted to seal the solar cell 5 and integrate the laminate S. Here, the laminate S may be covered with a film such as an elastic rubber, and the laminate S may be pressurized with a pressurized fluid from above the film.

After that, the laminated body S integrated in the above-mentioned pressurizing / heating step is taken out from the template, and a frame-shaped spacer 7 is provided on the periphery of the transparent plate of the laminated body S.
Is placed. A frame 1 in which a space 9 is integrally formed of a polyurethane RIM around a laminate S in which a space 9 is newly provided.
Cover with water and make watertight.

Finally, a heat insulating plate 11 made of a foam is attached to the back surface of the heat collecting plate 3 of the laminate S to complete the photothermal hybrid module 1A.

(Overall Configuration of Solar Heat Utilization System 100)
The solar heat utilization system 100 includes a header pipe 32 connected to a heat medium pipe 31 of the photothermal hybrid module 1A constituting the heat collection unit 101, and a return pipe 33 of a heat storage hot water storage tank K (two-heater electric water heater). The piping 34 is connected to form a circulation path.

The heat medium in the circulation path is circulated by a pump or the like provided in the heat storage tank K, so that the heat energy of the heat medium can be used.

Are installed on the roof Y of the building T, and the header tubes 32 of the horizontally adjacent photothermal hybrid modules 1A, 1A are connected to each other by connecting pipes. .

Water is stored in the heat storage tank K. A heat medium such as ethylene glycol filled in a circulation path by a circulation pump in the heat storage tank K is supplied to the photothermal hybrid modules 1A, 1A,.
It is returned to the heat storage tank K again through the return pipe 34 and circulated. Then, the water in the heat storage tank K is heated by the heat exchanger provided on the circulation path in the heat storage tank K.

At this time, heat is transferred from the heat collecting plate 3 heated by the radiant heat of the sun to the heat medium pipe 31, and the circulating heat medium is heated and stored in the heat storage tank K. The hot water stored in the heat storage tank K is sent to the gas water heater G to be used in a bathroom or a kitchen.

However, in the heat collecting section 101 of the solar heat utilization system 100, when the photothermal hybrid module 1A is installed on the roof Y, the power generation / heat collecting section 40 of the photothermal hybrid module 1A is moved in the inclination direction of the roof Y. On the lower side (eave side), the heat collecting section 30 is installed on the upper side (ridge side) in the inclination direction of the roof Y. Then, by driving the circulation pump in the heat storage tank K, the heat medium of the heat collecting plate 3 is caused to flow from the lower power generation / heat collecting section 40 to the upper heat collecting section 30. The pipe 31 is placed.

According to the present embodiment, the following operations are provided. The heat medium pipe 31 that allows the heat medium to pass through the heat collecting section 101 allows the heat medium to flow from the heat collecting section 101 on the lower side of the roof Y to the heat collecting section 101 on the upper side, and the heat collecting performance of the heat collecting section 101 is also improved. The height of the roof Y is improved from lower to higher. Therefore, the heat medium that gradually increases in temperature through the heat medium pipe 31 in order from the lower side can be further efficiently heated to a higher temperature by the heat collecting section 101 having higher heat collecting performance (heat collecting efficiency) on the upper final stage side. The heat collection performance of the entire Y can be improved.

One photothermal hybrid module 1A
Power generation that sacrifices heat collection performance by trying to convert part of solar energy into electrical energy
Since the heat collecting unit 40 is installed on the lower side of the roof Y and the dedicated heat collecting unit 30 having high heat collecting performance is installed on the upper side by converting solar energy into heat energy only, the above is realized. The overall heat collecting performance can be improved.

When the heat collecting section 101 is provided in a certain area of the roof Y, a single heat collecting hybrid module 1A constituting a part thereof includes a heat collecting section 3 having a high heat collecting performance.
Since 0 is provided to secure a large area dedicated to heat collection, the heat collection amount can be increased and the heat collection performance can be improved.

(Second Embodiment) (FIG. 5) The second embodiment is different from the first embodiment in that the heat collector 1 formed on the inclined surface of the roof Y of the solar heat utilization system 100 is different from the first embodiment.
01 consists of a photothermal hybrid module 1A and a solar heat collector 1C.

In this embodiment, the photothermal hybrid module 1A is provided with the solar cell panel 4 on the entire surface of the heat collecting plate 3, so that it comprises only the power generating / heat collecting portion 40 and does not have the heat collecting dedicated portion 30. It was composed of The solar heat collector 1 </ b> C includes the photothermal hybrid module 1 </ b> A without the solar cell panel 4, in other words, the solar heat collector 1 </ b> C only includes the heat collector panel 3. It has higher heat collection performance than 1A.

Heat collecting section 101 of solar heat utilization system 100
, The photothermal hybrid module 1A is installed on the lower side in the inclination direction of the roof Y, and the solar heat collector 1C is installed on the upper side. By driving the circulation pump in the heat storage tank K, the lower-side photothermal hybrid module 1A,
The heat medium pipes 3 of the heat collecting panels 3 are arranged so that the heat medium flows from the solar heat collectors 1C, 1C,.
1. The header tubes 32 are connected to each other. Specifically, the photothermal hybrid module 1A that is horizontally adjacent
A row-like module group and a row-like panel group in which each other and the heat collecting panels 3 are connected in series are connected in parallel.

According to the present embodiment, the following operations are provided. The heat medium pipe 31 that allows the heat medium to pass through the heat collecting section 101 allows the heat medium to flow from the heat collecting section 101 on the lower side of the roof Y to the heat collecting section 101 on the upper side, and the heat collecting performance of the heat collecting section 101 is also improved. The height of the roof Y is improved from lower to higher. Therefore, the heat medium that gradually increases in temperature through the heat medium pipe 31 in order from the lower side can be further efficiently heated to a higher temperature by the heat collecting section 101 having higher heat collecting performance (heat collecting efficiency) on the upper final stage side. The heat collection performance of the entire Y can be improved.

The photothermal hybrid module 1A, which sacrifices heat collecting performance by converting a part of solar energy into electric energy, is placed on the lower side of the roof Y,
Since the solar heat collector 1C having a high heat collecting performance is installed on the upper side by converting the solar energy into only the heat energy, the above is realized, and the heat collecting performance of the entire roof Y can be improved.

When the heat collecting section 101 is provided in a certain area of the roof Y, a part of the solar heat collector 1 having high heat collecting performance is provided.
C is installed to secure a large area dedicated to heat collection, so that the amount of heat collection can be increased and the heat collection performance can be improved.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design may be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, in the first embodiment, the heat collecting units provided on the inclined surface of the roof include a lower power generation / heat collecting unit 40 and a higher heat collecting / dedicating unit 30.
In the second embodiment, the second embodiment has a two-stage configuration of the lower-side photothermal hybrid module 1A and the upper-side solar heat collector 1C. However, in the present invention, the heat collection performance is classified into three or more types. Three or more types of heat collectors having improved heat collection performance may be arranged in multiple stages from the lower side to the upper side to improve the heat collection efficiency of the solar heat utilization system.

The inclined surface of the roof to which the present invention is applied is not limited to the inclined surface of the triangular roof, and may be an inclined surface provided on a flat roof.

Further, in the embodiment of the present invention, the heat collecting section provided on the roof may be composed of only a heat collecting section.

[0051]

As described above, according to the present invention, in the solar heat utilization system, the heat collecting performance of the entire roof can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a solar heat utilization system according to a first embodiment.

FIG. 2 is a front view showing a photothermal hybrid module.

FIG. 3 shows a photothermal hybrid module;
(A) is a sectional view of a main part, and (B) is a sectional view taken along line BB of (A).

FIG. 4 is an exploded perspective view showing the photothermal hybrid module.

FIG. 5 is a front view showing a solar heat utilization system according to a second embodiment.

[Explanation of symbols]

 EXPLANATION OF SYMBOLS 1A Photo-thermal hybrid module 1B Solar cell module 1C Solar heat collector 3 Heat collecting panel 4 Solar cell panel 5 Solar cell 6 Hot melt resin 30 Heat collecting dedicated part 31 Heat medium pipe 40 Power generation / heat collecting part 100 Solar heat utilization system 101 Hot part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E108 KK01 LL01 LL07 MM00 NN02 NN07 5F051 BA03 JA04 JA18

Claims (3)

[Claims] When providing a heat collecting portion for heating a heat medium by solar heat on an inclined surface of a roof, the heat collecting performance of the heat collecting portion is improved from lower to higher in the inclination direction of the roof, and the inclination direction of the roof is improved. A heat medium pipe arranged so that the heat medium flows from the lower heat collecting section to the upper heat collecting section. 2. A photothermal hybrid module in which a solar cell panel and a heat collecting panel are stacked and a solar thermal collector are used as the heat collecting section, and a photothermal hybrid module is provided on the lower side in the inclination direction of the roof, and on the upper side. The solar heat utilization system according to claim 1, wherein a solar heat collector is installed in the solar heat collector. 3. A photothermal hybrid module in which a solar cell including a solar cell and a hot-melt resin for sealing and bonding the solar cell is provided on the back surface of the panel as the heat collecting section, and a heat collecting panel is laminated. 2. The solar heat utilization system according to claim 1, wherein a power generation and heat collection unit in which a solar cell panel and a heat collection panel are laminated is installed on a lower side of the roof in the inclination direction, and a heat collection exclusive unit including only the heat collection panel is installed on an upper side. system.